August weather forecast
Hillsdale, NJ

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Weather in August

August, the last month of the summer in Hillsdale, is also a moderately hot month, with an average temperature fluctuating between 82.9°F (28.3°C) and 65.7°F (18.7°C).

Temperature

The onset of August marks an average high-temperature of a still warm 82.9°F (28.3°C), hardly differing from July's 84.7°F (29.3°C). In the month of August, Hillsdale records a consistent average low-temperature of 65.7°F (18.7°C).

Heat index

The heat index value for August is appraised at a tropical 87.8°F (31°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

August is the least humid month in Hillsdale, with an average relative humidity of 70%.

Rainfall

In Hillsdale, in August, during 15.3 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, there are 157.3 rainfall days, and 32.72" (831mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in August is 13h and 46min.
On the first day of the month, sunrise is at 5:52 am and sunset at 8:12 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:29 pm EDT.

Sunshine

In Hillsdale, New Jersey, the average sunshine in August is 10.1h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Hillsdale. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 6 in August transforms into this advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Hillsdale in August?

An average high-temperature, in August, in Hillsdale, is 82.9°F (28.3°C) and the average low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is appraised at 87.8°F (31°C).

What is the least humid month in Hillsdale?

With an average relative humidity of 70%, August is the least humid month.

What is the average humidity in August in Hillsdale?

In August, the average relative humidity is 70%.

How much does it rain in Hillsdale in August?

In Hillsdale, in August, during 15.3 rainfall days, 2.64" (67mm) of precipitation is typically accumulated.

When it does not snow in Hillsdale?

In Hillsdale, New Jersey, snow does not fall in May through September.

What is the average length of the day in August in Hillsdale?

In August, the average day length is 13h and 46min.

When are sunrise and sunset in August in Hillsdale?

On the first day of August in Hillsdale, New Jersey, sunrise is at 5:52 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:29 pm EDT.

How long on average sun shines in August in Hillsdale?

In Hillsdale, New Jersey, the average sunshine duration in August is 10.1h.

What are the months with the highest UV index in Hillsdale?

The months with the highest UV index in Hillsdale are June through August, with an average maximum UV index of 6.

How high is the UV index in August in Hillsdale?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Hillsdale, NJ

Average temperature in August - Hillsdale, NJ
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in August: 65.7°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in August
Hillsdale, NJ

Average pressure in August - Hillsdale, NJ
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Hillsdale, NJ

Average wind speed in August - Hillsdale, NJ
  • Average wind speed in August: 5.4mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in August
Hillsdale, NJ

Average humidity in August - Hillsdale, NJ
  • Average humidity in August: 70%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is August (70%).

Average rainfall in August
Hillsdale, NJ

Average rainfall in August - Hillsdale, NJ
  • Average rainfall in August: 2.64"

The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in August
Hillsdale, NJ

Average rainfall days in August - Hillsdale, NJ
  • Average rainfall days in August: 15.3 days

The months with the highest number of rainy days are May and July (16.8 days).
The month with the least rainy days is January (8.4 days).

Average snowfall in August
Hillsdale, NJ

Average snowfall in August - Hillsdale, NJ
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Hillsdale, NJ

Average snowfall days in August - Hillsdale, NJ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Hillsdale, NJ

Average daylight in August / Average sunshine in August - Hillsdale, NJ
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in August
Hillsdale, NJ

Average sunshine days in August - Hillsdale, NJ
  • Average sunshine days in August: 13.6 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (11.5 days).

Average UV index in August
Hillsdale, NJ

Average UV index in August - Hillsdale, NJ
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in August
Hillsdale, NJ

Average cloud cover in August - Hillsdale, NJ
  • Average cloud cover in August: 34

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in August
Hillsdale, NJ

Average visibility in August - Hillsdale, NJ
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Hillsdale, New Jersey, USA

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